Film developing reel



Feb. 13, 1945. A DRUCKER 2,369,220

- FILM DEVELOPING REEL Filed Aug. 14, 1942 /IljLjlll lllwliillllPatented Feb. 13, 1945 FILM DEVELOPING REEL Albert Drucker, Chicago,Ill., assignor to Burke &

James, Inc., Chicago, Ill., a corporation of Illi- Application August14, 1942, Serial No. 454,865

` Claims.

vand which reel, with the lm thereon, may be readily transferred fromone bath to another.V

A further object is to provide in a reel of this character, improvedmeans for anchoringor securing one end of the lm to the reel.

A further object is to provide in a reel of this character, a spirallyarranged continuous support against which the back of the film rests,and

.which support is provided With a number of apertures therethrough, notonly for the purpose of imparting lightness to the reel, but also topermit the bath solutions to contact and clean substantially the entirearea of both faces of the film.

A further object is to provide an improved reel of this character,embodying a spirally wound web or body portion, and arcuate bracessecured to one edge of the web for imparting rigidity thereto, toprovide maximum support for the web at the periphery of the reel, andimproved reel supporting members secured to one of'its facesforsupporting the reel in the bath and to prevent Wear of the body portionof the reel.

To the attainment of these ends, and the accomplishment of other new anduseful objects as Hwill appear, the invention consists in the featuresof novelty in substantially the construction, combination andarrangement of the several parts,

hereinafter more fully described and claimed and shown in theaccompanying drawing illustrating this invention, and in Which- Fig. lis a top plan view of a reel of this character, constructed inaccordance with the principles of this invention.

Fig. 2 is a detail sectional view, taken on line Fig. 3 is a detailperspective view of al portion of the back of the reel, showing one ofthebraces secured in position, and on an enlarged scale.

The body of the reel consists essentially of a spirally wound web I0which is constructed of any desired or suitable material, and the stripmay be of any desired width and thickness. The web is provided, in itsbody, with any desired number of apertures II, and the Web is secured atits inner end to a hub I2, the latter consisting preferably of a baseplate I3 of annular conguration and having a cross bar or member I4connected thereto. This hub is preferably in the form of a spool, havinga tubular portion I5 and a cross bar I6 corresponding to the cross barI4, so that the reel may vbe mounted upon any suitable support forrotation.

The extremity of the inner end of the web I 0 is 'preferably shaped toforma fork or bifurcation I1, to receive the extremity of the nlm,whereby the lm will be anchored to the reel.

Secured across one face of the reel are arcuate braces I8, any desirednumber of which may be provided, and the backs of the braces aredisposed adjacent the hub, while the extremities of the braces aredisposed adjacent the periphery of the reel. These braces may beconstructed of any suitable material, and are secured in position in anysuitable manner,.such as by Welding or the like. The lateral edges ofthe braces are preferably cut away, as at I9, for the purpose oflightness.

Additional braces 20 of a similar configuration are also secured to thesame face of the body of the reel, and a plurality of these additionalbraces are individual to each of the braces I8, and are disposed withinland are substantially parallel with the respective braces I8.V

All of the braces extend across the spaces between the convolutions ofthe coil of the web, and

"the outer extremity of the coil is anchored, as at 2 I, to one of thebraces.

As a means for supporting the reel in the bath and to prevent wearing ofthe web, suitable supports or projections 22 may be provided, and theymay be secured in position by attaching the same Vto one of the bracesor to an arm portion 23 connected to one of the braces. These wearingmembers or supports are preferably disposed at or near the periphery ofthe reel, and are preferably constructed of chemically inert materialsto prolong their Wearing qualities.

In use, the free end of the film is inserted in the fork-shapedextremity I'I of the coil, and the coil is then rotated upon a suitablesupport so as to wind the lmupon the web and between the convolutionsthereof, the space between adjacent convolutions being somewhat greaterthan the thickness of the lm.

When the film has been wound upon the reel and the reel is placed in ahorizontal position, the lm will be supported by the braces, and thereel with the film thereon is insertedin the developing or treatingbaths, and the lm is then developed in the usual manner.

With this construction of reel, it will be manifest that it may belifted from one bath to an other while the film is thereon. With theparticular arcuate-shaped braces there will be provided a maximumsupport for the web at the periphery of the reel, and the braces willimpart rigidity. The apertures Il in the web I are provided for thepurpose of imparting lightness to the reel, and, at the same time, theywill allow the chemical solution to pass to and from the film with thegreatest ease.

While the preferred form of the invention has been herein shown anddescribed, it is to be understood that various changes may be made inthe details of construction and in the combination and arrangement ofthe several parts, within the scope of the claims, without departing4from the spirit of this invention.

- What is claimed as new is:

1. A film developing ree1 embodying a spirally wound web, theconvolutions of which are spaced a substantial distance from each other,and arcuate braces secured to one edgev of said web, said braces curvingindirections opposite to the directions of curve of the convolutions ofthe coil across which they extend.

2. A film developing reel embodying a hub, a

spirally Wound web encompassing the hub, one

end of the web being anchored adjacent the hub, said web being providedwith apertures therethrough, a. plurality of arcuate braces secured toone edge of said web and extending across the spaces between theconvolutions of the coil, the backs of said vbraces being disposedtowards said hub, and the ends thereof, extending towards .and anchoredat the periphery of the coil, the

said braces curving in a direction opposite to the direction ofcurvature of the convolutions of the 'additional braces beingdisposedwithin the respective first said braces, the braces of eachgroup being substantially parallel with and spaced from each other.

4. A film developing reel embodying a4 hub, a

.spirally wound web encompassing the hub, one

end of the web being anchored adjacent the hub, a plurality of arcuatebraces secured to one edge of said web and extending across the spacesbetween the convolutions of the coil, the backs of said braces beingdisposed, extending towards and anchored at said hub, and the endsthereof to-I wards the periphery of the coil, portions of the sides ofsaid braces being cut away.

5. A film developing ree1 embodying a spirally wound web, theconvolutions of which are spaced a substantial distance from each other,and arcuate braces secured to and supported entirely by one edge of saidweb, the said braces curving away from the center of the coil, all ofthe ends of the braces being disposed adjacent to and anchored at theperiphery of the coil.

6. A nlm developing reel embodying a spirally wound web, theconvolutions of which are spaced a substantial distance from each other,and arcuate braces secured to and supported entirely by one edge of saidweb, the said braces curving away from the center of the coil, all ofthe ends of the braces being disposed adjacent to and anchored at theperiphery of the coil, the lateral edges of the braces being cut away atspaced intervals throughout their length.

'7. A film developing reel embodying a spirally wound web, theconvolutions of which are spaced a substantial distance from each other,and arcuate braces secured to and supported entirely by one Aedge ofsaid web, the said braces curving away from'the center of the coil, allof the ends of the braces being disposed adjacent to and anchored at theperiphery of the coil, the extremities of said ends being deflectedagainst the outer periphera1 surface of the coil.

8. A iilm developing ree1 embodying a spirally wound web, theconvolutions of which are spaced a substantial distance from each other,and arcuate braces secured to and supported entirely by one edge of saidWeb,the said braces curving away from the center of the coil, all of theends of the braces being disposed adjacent to and anchored at theperiphery of the coil, the said braces being arranged in a plurality ofgroups, the braces of each group being substantially parallel anddecreasing in length and curvature from the innermost brace toward theperiphery of the coil.

9. A film developing reel embodying a spirally wound web, theconvolutions of which are spaced va substantial distance from eachother, arcuate and a hub to which the inner end of the coil is secured,said hub being disposed intermediate the innermost braces of saidgroups.

10. A film developing reel embodying a spirally wound web, theconvolutions of which are spaced a substantial distance from each other,and arcuate braces secured to and supported entirely by one edge of saidweb, the said braces curving away from the center of the coil, all ofthe ends of the braces being disposed adjacent to and anchored at theperiphery of the coil, the said braces being arranged in a plurality ofgroups, the braces of each group being substantially parallel anddecreasing in length and curvature from the innermost brace toward theperiphery of the coil, the inner end of the coil being shaped to form aseat for one end 0f a film.

ALBERT DRUCKER.

